Press



y 30, 1929- R. T. ANDERSON 1,722,881

PRESS Filed Jan. 22, 1927 2 Sheets-Sheet l y 30, 1929- R. T. ANDERSON 1,722,881

PRESS Filed Jan. 22, 1927 2 Sheets-Sheet 2 Patented July 30, 1929.

UNITED STATES PATENT OFFICE.

RAYMOND '1. ANDERSON, OF LAKEWOOD, OHIO, ASSIGNOB TO THE V. D. ANDERSON COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO.

PRESS.

Application filed January 22, 1927. Serial No. 162,899.

This invention pertains to presses and particularly to that type employed for expressing moisture, oil, etc., from various materials.

The press is similar in construction and operation to that set forth in Letters Patent No. 829,314, dated August 21st, 1906 and Letters Patent No. 1,321,273, dated November 11th, 1919, wherein there is shown a shell formed from a series of spaced bars arranged in circular series with a series of worms mounted for rotation within the shell. In the latter patent the bars are so formed and arranged that upon the interior 5 of the shell the forward edge of each bar, with reference to the advancing face of the compressing worm, lies below the adjacent edge of the adjoining bar.

The object of the present invention is to produce a barrel presenting in the main a like interior surface to that just mentioned v but to so form the bars that they are reversible in order that when they become worn they may be turned over and thus present I a new shell or barrel interior having the same contour as'that presented by the initial positioning of the bars when new. The

bars upon their inner and outer edges are similarly contoured and either edge, when the bars are assembled, takes a fair and even bearing against the surrounding supporting members of the press frame.

The invention is illustrated in the annexed drawings wherein:

Figure 1 is a transverse sectional view of a press of the type shown in the Anderson patents, aforesaid, the section being such that ends of one of the series of the bars which go to make up the length of the press appear in full while the shaft and worm appear in section, a

Figures 2 and 3 diagrammatic v ews on a somewhat enlarged scale illustrative of two of the bars and the relation which they assume to each other, to the supporting element therefor, and to the path of rotation of the worm,

Figure 4; a like view wherein the edges of the bars are given a slightly difierent contour from that shown in Figures 2 and 3, and

Figure 5 an enlarged View of the edge of one of the bars shown in Figure 4 to more clearly illustrate the point contacts that the bar has with the outer supporting element.

The shell or barrel of the press is built up in the same manner as set forth in the patents above mentioned, that is it comprises a series of transversely arranged barrel rings or members 1 and 2 which are interconnected n spaced relation by longitudinally extendmg frame bars 3, there being three of such bars to each series of ring or frame elements 1 and 2. Each frame bar carries the usual shoe bar 4-, the inner face whereof is convex, and intermediate the immediately adjacent bars 4 there is arranged the usual knife bar designated by 5.

Carried by and secured to each of the upper and lower frame bars 3 is a key or wedge bar 6 which, when drawn outwardly in a radial direction, cooperates with gib bars 7 located to each side thereof to force the barrel bars 8 laterally and against the shoe bars 4. The various bars will of course be slightly spaced apart at their inner edges by means of suitable interposed spacers 9 as is well known in this art.

The inner edge or surface of each of the barrel frame members or rings is formed upon a radius, the center whereof is coinci dent with the center of the shaft 10 upon which are mounted the compression worms 11. The side walls a and b of each of the barrel bars 8, Figures 1, 2 and 3, are parallel and the outer and inner edges cl and e curved, the center of the radius for (1 being coincident with the center of shaft 10 (or the center of the barrel) while the curvature of e is identical. As will be seen upon reference to Figures 2 and 3, the radius line '2' is off center with reference to the center line :22 of the bar, the latter line lies in parallelism with the side faces a and I). By thus crowning or curving the faces side Z) is shorter than side a, the difference in length being determined by the degree of angularity of radius 7" with reference to center line 00. Hence when the bars are seated, Figure 2, the curved edge (Z will take a full and fair hearing against the inner edge of the barrel ring 1 (or 2 as the case may be) and as a consequence the bars will assume a skewed position thereby throwing the edge or corner y of one bar outwardly of the adjacent edge or corner 2 of the next adjacent bar. Thus there is produced a stepped arrangement of the bars somewhat similar to that set forth in Patent No. 1,321,273. The present formation and arrangement is, however, advantawhat enlarged scale.

geous in several particular. By reason ofthereon; and a shell surrounding the same,

the presence of the curved, crowned or arcuate face 6 the worm, when deflected from its normal path, indicated by the line 7?, due to the action of any unduly hard material within the press, to the path indicated by the line p, will contact the face e inter mediate its edges and hence no peening ac tion takes place at such edges or corners.

Again when the bars become worn they. may be readily reversed and by turning them over, end for end, the same contour is produced within the barrel. Thus the bars 8, in Figure 8, may be said to have been turned over bringing the edges (Z (Figure 2) innermost while the previously innermost edges 6 form the outermost edges, which then bear against the barrel rings. Thus where the bars when worn on one edge were useless and discarded under the older con struction, the bars of the present invention have a life twice as long, a factor of material saving in expense to the owner of the press.

While all curved or arcuate surfaces are, geometrically speaking, composed of a series of interconnected flat faces I can make the edges of the bars with two distinctly flat faces standing at an angle to each other; said faces bearing the same angular relation to the center line w of the bar but at different angles to the radial line 1" of the press barrel.

Thus in Figure 4 the bars 8 are each formed with two flat faces e' and e upon each edge producing in effect a crowned surface. The innermost edges will assume the same relation as those previously described and will function in the same manner with reference to the worm. The outermost edges will take a three point bearing against the frame or barrel rings as shown in, Figure 5 wherein a single bar is shown on a some Bars thus formed may be turned over, end for end, when one edge thereof has become worn, in order to produce or present a new interior barrel surface. The worm rotates in the direction shown by the arrows, Figures 1 to 4:, and inasmuch as the edge a of one bar lies inward of the edge y of the next adjacent bar,

considered in the direction of rotation of the worm, there is no tendency for the latter to arrest the material and force it outwardlythrough the space between the bars.

Having thus described the invention what is claimed is:

1. In a press, the combination of a shaft; at least one compression worm' mounted said shell being formed of a series of spaced bars, arranged in circular series, the inner edges of the bars being crowned intermediate the corners thereof.

2. In a press, the combination of a shaft; at least one compression worm mounted thereon; and a shell surrounding the same, said shell being formed of a series of spaced bars arranged in circular series, and in skewed relation to each other; the inner edge of each bar having its surface crowned.

3. A shell for presses comprising frame members presenting upon their inner surfaces a seating face substantially circular in outline; a series of bars, arranged in spaced relation to each other around said seating face, the inner and outer edges of each bar being crowned, whereby, when the bars are worn upon their innermost edges, they may be turned to produce a new interior shell surface comparable to the initial surface.

'4. A shell for presses comprising frame members presenting upon their inner surface a seating face substantially circular in outline; and a series of bars arranged in spaced and skewed relation to each other around said seating face, the inner and outer edges of the bars beingcrowned.

5. A shell for presses comprising frame members, presenting upon their inner surface a seating face substantially circular in outline; and a series of bars arranged in spaced relation to each other around said seating face each of said bars having paral lel side faces with the opposite edges or faces of the bar crowned, the radii upon which said crowned surfaces are formed being off-center with reference to a center line passing through the bar from cage to edge in parallelism with the parellel side faces, whereby when the bars are positionedand brought to bearat their outer edges upon the seating face the bars will assume a skewed relation to each other.

6. As anew article of manufacture, a bar for the shell of apress, said bar having parallel side faces with the opposite edges or faces of the bar crowned, the radii upon which said crowned surfaces are formed being off-center with reference to a center line passing through the bar from edge to edge in parallelism with the parallel side faces thereof.

In testimony whereof I name to this specification.

RAYMOND T. ANDERSON.

have signed my 

